The complex polarization angles of radio pulsars: orthogonal jumps and interstellar scattering

Abstract

Despite some success in explaining the observed polarisation angle swing of radio pulsars within the geometric rotating vector model, many deviations from the expected S-like swing are observed. In this paper we provide a simple and credible explanation of these variations based on a combination of the rotating vector model, intrinsic orthogonally polarized propagation modes within the pulsar magnetosphere and the effects of interstellar scattering. We use simulations to explore the range of phenomena that may arise from this combination, and briefly discuss the possibilities of determining the parameters of scattering in an effort to understand the intrinsic pulsar polarization.

5 pages

References in corpus (5)

• New pulsar rotation measures and the Galactic magnetic field
• An empirical model for the beams of radio pulsars
• Multi-frequency integrated profiles of pulsars
• High-precision geometry of a double-pole pulsar
• Frequency dependence of orthogonal polarisation modes in pulsars

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• A polarization census of bright pulsars using the Ultra-Wideband Receiver on the Parkes radio telescope
• Linear to circular conversion in the polarized radio emission of a magnetar
• Pulsar polarization: a broad-band population view with the Parkes Ultra-Wideband receiver
• Artefacts of circumpolar cartography in radio pulsar polarization
• Circular polarization in radio pulsar PSR B1451-68: coherent mode transitions and intrabeam interference
• Radio pulsar polarization as a coherent sum of orthogonal proper mode waves
• Tackling Radio Polarization of Energetic Pulsars
• Pulsar polarimetry with the Parkes Ultra-Wideband receiver
• The Chinese pulsar timing array data release I. Polarimetry for 56 millisecond pulsars
• A model for distortions of polarisation-angle curves in radio pulsars
• Evidence for scattering of curvature radiation in radio pulsar profiles